edu.washington.NVisF.plotter
Class PositionStrategy

java.lang.Object
  |
  +--edu.washington.NVisF.plotter.PositionStrategy

public class PositionStrategy

extends java.lang.Object

A PositionStrategy defines how to construct 3-D positions from the data. This class uses a vector field of the desired objects as the positions; the default is simply the data field "position". Subclasses of this class can override the getPositions(command) method to provide different behavior. A PlotCommand is used as the data source.

Constructor Summary

PositionStrategy()
Constructs a new PositionStrategy that will use the "position" field of the data for its positions.

PositionStrategy(java.lang.String fieldName)
Constructs a new PositionStrategy that will use the specified field of the data for its positions.

Method Summary

java.lang.String	getFieldName() Returns the name of the data field used as positions.
java.lang.String	setFieldName(java.lang.String fieldName) Sets the new name of the data field to use for positions.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

PositionStrategy

public PositionStrategy()

Constructs a new PositionStrategy that will use the "position" field of the data for its positions.

PositionStrategy

public PositionStrategy(java.lang.String fieldName)

Constructs a new PositionStrategy that will use the specified field of the data for its positions.

Parameters:

fieldName - the name of the DataField

Method Detail

getFieldName

public java.lang.String getFieldName()

Returns the name of the data field used as positions.

setFieldName

public java.lang.String setFieldName(java.lang.String fieldName)

Sets the new name of the data field to use for positions. The return value is the previous name, or null if the input parameter is null (in which case no change is made).

Parameters:

fieldName - the new data field to use

Returns:

String the data field previously used, or null